Improvement in devices for converting motion



H. H. BISHOP. DEVICE PoR GONVBRTING MoTloN.

No. 37,806. Patented Mau.l 3. 1863.

wei/7,'

UNITED STATES PATENT OFFICE.

HOBERT HENRY BISHOP, OF BRISTOL, CONNECTICUT.

IMPROVEMENT IN DEVICES FORA CONVERTING MOTION.

Sprcification forming part of Letters Patent No. 37,806, dated March 3, 1863.

To aZZ whom it may concern:

Be it known that I, HOBERT HENRYBISHOP, y ot' Bristol, in the county ot' Hartford and State I of Connecticut, at present residing in Faris, ,l France, have invented a new and Improved I Device for Converting Oscillating into Contin- I nous Rotary Motion and I do hereby declare I that the following is a full, clear, and exact descripton of the saine, reference being had to the accompanying drawings, forming a part of this specification, in Which- Figure lrepresents a vertical central section of my invention, the line xx, Fig. 2, indicating the plane of section. Fig. 2 is a trans verse vertical section of the same, taken in .the plane indicated by the line y y, Fig. l.

Similar letters of reference in both views indicate corresponding parts. This invention consists in the arrangement ot' a treadle'with two hooked parallel arms, in combination with two pulleys provided with tangential driving-arms and set to turn the fly-wheel shaft in one and the saine direction in such a manner that by the action ofthe oscillating treadle on the two pulleys a positivecontinuous rotary motion of the fly-wheel is produced. l

To enable those skilled in the art to make and use my invention, I will proceed to de? scribe its construction and operation with reference to the drawings.

A represents the flywheel of a sewing-ma- 1 chine or of a lathe, or any other small machine to which it is desired to impart a continuous rotary motion in one direction. This ily-wheel turns freely on a stationary pin, B, which is inserted into the standard or frame Gand retained in its place by a set-screw, a. The hub b of the ily-Wheel A is long enough to pass through a pulley, D, which rotates freely on the same, being prevented moving in a longitudinal direction on one side by a shoulder on the hub, and on the other by a pulley, D', which rotates freely on the central pin, B, and which is prevented from sliding oft' from the end of said pin by the head c, as clearly shown in Fig. 1 of the drawings. Each of the pulleys l) D' is provided with a circular rim, d d', and arms e e', which are inserted into notches f in the end of the hub of the ily-wheel, and bear against the inner surfaces of the rims d d'. These arms are somewhat longer than the corresponding radii of the rims d d', and consequently they have to be brought in a tangential position in order to be able to introduce them into said rims, and they are provided with limber springs g g', which hold their outer ends in contact with the inner sur faces of the rims. If either of the pulleys ,D D' is now turned inthe direction of the arrow marked upon them in Fig. 2, ,thefriction on the ends of the correspondingtangentialarms c or e' has a tendency' to turn said arms into a radial position, and thereby they are caused to bind between the h ub and inner surfaces of the rim and to cause a corresponding rotary motion of the fly-wheel A. The inside diameter ofthe rim d' is somewhat larger than that of the rim d, and thearms e' are alittle longer than the arms e, so that the points of the former slide on the edge of the rim d, and that the same are not liable to catch 'into said rim. Without this precaution the points of the arms e would he liable to catch in the rin d, and the action of the pulley 1)' would be rendered unsafe, because if such` catching should take place the receding 'motion of the pulley D would prevent they arms c' from acting properly on the rmd' of the pulley D', and this pulley would be liable to rotate in either direction withoutproducing any mot-ion of the fly-wheel; or, if said arms wouldbe permitted to bind simultaneously in both pulleys, the motion of the whole device would be stopped. The outside diameters of the pulleys D D' are i equal to each other, and each pulley is provided with a groove to receive the cords h IL'. These cords are made fast to the pulleys D D', and the ends of the cord h from the pulley D are secured to hooked arms i', which project in a horizontal direction from the treadle E above the pulleys D D', and the ends of the cords h are fastened 'to similar arms, i', which project from the treadle E parallel to the arms r,`beloW the pulleys D D', each cord being wound once, or ol'tener, around its pulley. It' the treadle E is now depressed in the direction of arrow 1, Fig. 2, the arms ii' move in the direction of arrows 2, and the cord h turns the pulley D in the direction of the arrow marked thereon in Fig. 2, whereas the cord h turns the'p'ulley D in the opposite direction. The tangential arms e are thereby caused to bind on the rim d', and the liy-wheel Arotates in the direction of the arrow marked upon it in Fig. 2. At the same time the arms e slide Yin the rim d. If the crear-11e rises in the direc- The combination, with the fly-wheel and its hub b, made as represented, of the two arms e e', of unequal length, the two pulleys D D', of unequal interior diameters, the cords h h', and the hook-armed treadle E, the whole constructed and operating in the manner herein shown and described.

AH. n. BISHOP.

Witnesses:

A. GUIoN, J AMES W. BRooKs.

lil.. :u 

